Delivering Devils is the second mission in the UC Vanguard questline in Starfield. To access it, players must have joined the UC Vanguard, the largest faction in the game, and completed the probationary mission called Grunt Work.
After the Grunt Work mission, the player's character is asked to take an unusual Terrormorph sample to a scientist named Dr. Percival Walker. Unfortunately, Dr. Walker isn't easy to find, and the protagonist has several options to locate him. This guide will outline the most efficient way to obtain Walker's help and complete the Delivering Devils questline in Starfield.
How To Start The Delivering Devils Quest
The Delivering Devils quest becomes active after completing the UC Vanguard exam and the Grunt Work mission. Players can speak to Commander Tuala In New Atlantis on Jemison in the Alpha Centauri System to accept it and then travel to Cydonia on Mars in the Sol System. Thanks to some of the dialogue options on Cydonia, Sarah Morgan is a helpful companion on this mission.
Locate The Trade Authority On Mars
When the player arrives in Cydonia, they must find the Trade Authority and speak to Oktai Enbayer.
Embayer reveals that Dr. Percival Walker is in significant debt to the Trade Authority after selling illegal goods. The protagonist is then instructed to retrieve information from patrons of the Sixth Circle bar.
The Sixth Circle Bar
Players should go straight to Lou, a member of the Red Devils, who is serving behind the bar, and he will ask several questions. However, if the player mentions they work for the UC Vanguard, they can select Sarah Morgan's dialogue answer, and she will confirm they work for the Vanguard.
The bartender will suggest two options to clear Dr. Walker's debt. The first is to pay it off, and the second is to sneak into a locked room at the Trade Authority and lower the debt illegally. Thankfully, there is another route offered by one of the patrons called Cambridge.
Speak To Cambridge At The Sixth Circle
Cambridge is standing alone in the bar and will beckon the player's character into conversation. Speaking to him, he will offer another route to clear Walker's debt. This requires the player to retrieve a compound called Aqueous Hermadite from the underground mines and sell it to the Trade Authority in exchange for clearing the debt.
The catch is that the player must clear out the dangerous Spacers and their leader lurking there. Since players must clear them out before reaching Dr. Walker, this is the best course of action and won't cost any additional credits, and it will reward players with a great deal of XP.
Kill The Spacer Leader
The Spacers and their leader are located in the Abandoned Mines. It's a long trek, so players should use waypoints with the hand scanner to get there. There are a lot of enemies at the facility, so it's a good idea to save the game before entering. Moreover, if players want to use stealth to defeat these foes, they should leave their companions behind.
Players must head deep into the mines and kill all the spacers and their leader. There are many heavily armed enemies here, so ensuring a good supply of med kits and health aids is advised. Following the mission marker, players can clear out all enemies and kill the leader.
Contact Cambridge On The Intercom And Collect The Compound
After killing the leader and his soldiers, players can follow the blue mission marker to the intercom on the wall to inform Cambridge that the Abandoned Mines are safe. He will instruct the protagonist to find some Aqueous Hermadite. Just outside the research area, the hand scanner can be used to collect the nearby compound.
With the Aqueous Hermadite in hand, players can put it in the Thresher machine and wait for it to be analyzed. Once the analysis is complete, players can contact Cambridge again. He will instruct the player to collect the elevator key and return to Cydonia with the sample.
Return To Cydonia
The elevator can be used to reach the surface and fast-travel to Cydonia. Heading back to the Sixth Circle Bar and speaking to Cambridge, he will prepare the finishing touches for the sample to be traded for Dr. Walker's debt.
After the conversation with Cambridge, it is time to walk back to the Trade Authority and speak to Oktai to make the trade. Oktai is interested, so players should inform him that the spacers have been cleared out, and he will reward them with 3700 credits and clear Dr. Walker's debt.
How To Find Dr. Percival Walker
With Walker's debt settled, players can head back to the Sixth Circle and bar and speak to Lou. The bartender will hand over a key to reach Walker at Cydonia Red Devils Headquarters. From here, players should leave the colony and fast travel to the Employee's Entrance at the Abandoned Mines - the elevator.
Following the blue mission marker and unlocking the door to the Drill Waste Room, players must be prepared to use the jump pack to clear the gaps in the path to Dr. Walker. So, ensuring the Boost Pack skill is unlocked under the Tech tab is vital.
At the Red Devils HQ, players will find Dr. Walker sitting outside. They can then speak to him and follow him into the lab, where he will analyze the Terrormorph sample and confirm his worst fears. It's a match for the Terrormorphs that attacked Londinian, and it appears the Terrormorphs are growing faster than before.
Meet With Hadrian
After Dr. Walker has finished analyzing the sample, the player must take him to meet Hadrian outside the Sixth Circle bar on Cydonia. Hadrian is the soldier that the player saved from the Terrormorph in the Grunt Work mission. To conclude the Delivering Devils quest, players must leave the facility, fast-travel to Cydonia, head into the bar, and speak to Hadrian.
Starfield is available for PC and Xbox Series X/S.